The safety and efficacy of this agent(s), or use in this setting, has not been established or is subject to confirmation. For an agent(s) whose safety and efficacy has not been established or confirmed, future regulatory approval or commercial availability is not guaranteed.
Vepdegestrant is an investigational compound. Its safety and efficacy have not been established. * Vepdegestrant is being co-developed with Arvinas.
COMPLETED
China
EXPERIMENTAL: ARV-471
DRUG: ARV-471
ARV-471 will be administered orally once daily with food (eg, a light meal of approximately 400 to 600 calories which includes a mixture of fat carbohydrates, and protein) at RP3D for monotherapy defined in study ARV-471-mBC-101, in continuous dosing over 28-day cycles
Single dose Cmax (Maximum plasma concentration)
Maximum plasma concentration
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose up to Day 2
Single dose AUCtau
Area under the concentration-time profile from time zero to time tau (τ), the dosing interval, where tau = 24 hours (QD dosing)
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 2
Multiple dose Cmax
Maximum Observed Plasma Concentration (Cmax)
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 71
Multiple dose AUCtau
Area under the concentration curve from time 0 to end of dosing interval (AUCtau), where dosing interval was 24 hours.
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 71
Objective Response Rate - Percentage of Participants With Objective Response
Percentage of participants with objective response based assessment of confirmed complete response (CR) or confirmed partial response (PR) according to Response Evaluation Criteria in Solid Tumors (RECIST). Confirmed responses are those that persist on repeat imaging study at least 4 weeks after initial documentation of response. Per RECIST v1.1: CR was defined as complete disappearance of all target lesions and non-target disease, with the exception of nodal disease. All nodes, both target and non-target, must decrease to normal (short axis \=30% decrease under baseline of Percentage of participants with objective response based assessment of complete response (CR) or partial response (PR) according to Response Evaluation Criteria in Solid Tumors (RECIST).
Baseline up to 24 weeks
Percentage of Participants With Clinical Benefit
Percent of participants with confirmed complete response (CR), partial response (PR) or stable disease (SD) for at least 24 weeks on study according to RECIST. Per RECIST v1.1: CR was defined as complete disappearance of all target lesions and non-target disease, with the exception of nodal disease. All nodes, both target and non-target, must decrease to normal (short axis \=30% decrease under baseline of the sum of diameters of all target lesions. The short axis was used in the sum for target nodes, while the longest diameter was used in the sum for all other target lesions. No unequivocal progression of non-target disease. No new lesions. SD was defined as not qualifying for CR, PR, Progressive Disease (PD).
Baseline up to 24 weeks
Duration of Objective Response (DOR)
DOR: time from date of first documented response (CR or PR) to first documented progression or death due to underlying cancer. RECIST V1.1, a) CR: disappearance of all lesions; any pathological lymph nodes (TLs) or non-pathological (non-TLs) must have reduction in short axis to \=30% decrease in sum of diameter (dia) of all TLs, referring baseline sum of dia; c) PD: \>=20% increase in sum of diameter of all measured target lesions taking as reference smallest sum of diameter of all target lesions recorded at or after baseline, sum must also be absolute increase of \>=5 mm. Unequivocal progression of existing non-target lesions. Appearance of at least 1 new lesion. If a participant with a CR or PR had no PD or death due to underlying cancer, participants was censored at date of last adequate tumor assessment.
From the date of first documented response (CR or PR) until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 100 weeks
Presence (rate) or absence of blood biomarkers
To identify biomarkers (ESR1 mutation) of complete response and progression if occurs
immediately after the end of treatment
Number of Participants With Notable Electrocardiogram (ECG) Values
Criteria for notable ECG values were as follow: QT interval (in millisecond \[msec\]) new (newly occurring post-baseline value) greater than (\>) 450, 480, 500, increase from baseline \>30, increase from baseline \>60; corrected QT interval by Fredericia formula (QTcF) in msec new (newly occurring post-baseline value) \> 450, 480, 500, increase from baseline \>30, increase from baseline \>60; corrected QT interval by Bazett's formula (QTcB) in msec new (newly occurring post-baseline value) \> 450, 480, 500, increase from baseline \>30, increase from baseline \>60; heart rate in bpm new (newly occurring post-baseline value) \100.
From baseline up to 28 days after last dose of study drug
Number of Participants With Laboratory Abnormalities
Hemoglobin (HGB),hematocrit,erythrocytes (ery.),HDL cholesterol (chl.)\
Baseline (Day 1) up to at least 28 days after last dose of study drug
Number of Participants With Clinically Significant Change From Baseline in Vital Signs
Vital signs (temperature, respiratory rate, pulse, systolic and diastolic blood pressure) were obtained with participant in the seated position, after having sat calmly for at least 5 minutes. Clinical significance of vital signs was determined at the investigator's discretion.
Baseline up to 28 days after last dose of study drug
Number of Participants With Adverse Events (AEs) by type, frequency, severity (as graded by NCI CTCAE verision 5.0), timing, seriousness and relationship to study treatment
Counts of participants who had treatment-emergent adverse events (TEAEs), defined as newly occurring or worsening after first dose. Relatedness to \[study drug\] was assessed by the investigator. Participants with multiple occurrences of an AE within a category were counted once within the category. An adverse event (AE) was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. As per CTCAE version 4, Grade 1= mild AE; Grade 2= moderate AE; Grade 3= severe AE; Grade 4= life-threatening or disabling AE; Grade 5= death related to an AE.
Baseline up to 28 days after the last dose of study drug
Single dose Tmax
Time at which Cmax occurred
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 2
Single dose AUClast
Area under the concentration-time profile from time zero to the time of the last quantifiable concentration (Clast)
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 2
Single dose MRCmax
ARV-473 to ARV-471 ratio for Cmax
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 2
Single dose AUCinf
Area under the concentration-time profile from time zero extrapolated to infinite time
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 2
Single dose CL/F
Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Clearance was estimated from population pharmacokinetic (PK) modeling. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood.
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 2
Single dose Vz/F
Apparent volume of distribution
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 2
Single dose t½
Terminal half-life
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 2
Multiple dose Tmax
Time to Reach Maximum Observed Plasma Concentration
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 71
Multiple dose Vz/F
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 71
Multiple dose MRCmax
ARV-473 to ARV-471 ratio for Cmax
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 71
Rac
Accumulation ratio based on AUC (observed)
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 71
t½eff
Effective half-life (t½eff) based on accumulation ratio
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 71
Multiple dose CL/F
Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Clearance was estimated from population pharmacokinetic (PK) modeling. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood.
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 71
Multiple dose t½
Terminal half-life
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 71
Single dose MRAUCtau
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 2
Multiple dose AUClast
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 71
Multiple dose Cmin
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 71
Multiple dose Ctrough
0, 1, 2, 4, 6, 8, 12, 24 hours post-dose Up to Day 71
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Sponsor: Pfizer
Collaborator: Arvinas Estrogen Receptor, Inc.
For more information, call or email the Pfizer Clinical Trial Contact Center:
When calling, please reference this study number:
NCT# stands for National Clinical Trial number. This is a unique identification code given to each clinical trial registered on ClinicalTrials.gov. The format is "NCT" followed by an 8-digit number (for example, NCT00000419). Also called the ClinicalTrials.gov identifier.
NCT05732428
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